... following;Pipe, Gutter, Tile, Electric wire, Vinyl sheet, Parts of Electric product, Parts of Automobile, Toy, Film, Garbage bag, Container, Tableware ... change from acidic to neutral. So it becomes good for preserving for long time without rot like newspaper which is acidic. ... glass, Optical glass like lens of camera, and Ceramics for electronic parts.At the school, it is contained to Powder of white ...